This is translated from a recent facebook post. The mapping site is in Spanish but is easy enough to follow and participate if you have any images of invasive hornets in Spain.
In 2018, the SGHN (Sociedad Gaditana de Historia Natural) raised the alarm for the first time about the appearance of Vespa orientalis in the countryside of Gibraltar, warning of the danger it posed to Cadiz beekeeping, biodiversity and people.
Five years later, the eastern hornet is experiencing a great expansion, being sighted in the countryside of Jerez, Sierra de Cádiz, and even in other provinces such as Málaga, Seville or Jaén. From the SGHN we encourage you to upload your observations to the website http://mapadeavispas.com/, a website that compiles sightings of invasive exotic wasps. Thank you!